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121: Difference between revisions
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The frequency response is 5 Hz to 12 MHz. It has an unbalanced signal path with switchable compensated attenuators before and after the first gain stage, a [[6CB6]] common-cathode amplifier. The [[1121]] can be considered the successor to the 121. | The frequency response is 5 Hz to 12 MHz. It has an unbalanced signal path with switchable compensated attenuators before and after the first gain stage, a [[6CB6]] common-cathode amplifier. The [[1121]] can be considered the successor to the 121. | ||
==Comparison of 121 and 112== | |||
The 121 and 112 are both standalone amplifiers produced by Tektronix in the 1950s. | |||
A comparison shows their differences. | |||
{| border="1" style="text-align: center;" | |||
! scope="col" | | |||
! scope="col" | 121 | |||
! scope="col" | 112 | |||
|- | |||
! scope="col" | Bandwidth | |||
| 5 Hz to 12 MHz | |||
| DC to 2 MHz | |||
|- | |||
! scope="col" | Voltage Gain | |||
| 100 | |||
| 5000 | |||
|- | |||
! scope="row" | Year of Introduction | |||
| 1950 | |||
| 1950 | |||
|- | |||
! scope="row" | Weight | |||
| 18 lbs (8 kg) | |||
| 32 lbs (15 kg) | |||
|- | |||
! scope="row" | Price in 1950 catalog | |||
| $265 | |||
| $495 | |||
|- | |||
|} | |||
==Manuals== | |||
* [http://w140.com/tek_121_complete.pdf Tektronix 121 Manual (PDF)] | * [http://w140.com/tek_121_complete.pdf Tektronix 121 Manual (PDF)] | ||
* [http://w140.com/tek_fcp/tek_type_121_factory_cal_proc.pdf Tektronix 121 Factory Calibration Procedure (PDF)] | * [http://w140.com/tek_fcp/tek_type_121_factory_cal_proc.pdf Tektronix 121 Factory Calibration Procedure (PDF)] | ||